CISCO Security Advisory
Published Date: Not specified
CVE: CVE-2026-20200
Advisory Summary
🗓️ August 5, 2026
📣 ⚠️ Title: Cisco IMC Argument Injection—Authenticated Remote RCE & Root Privilege Risk
- Cisco has disclosed multiple vulnerabilities in the web-based management interface of Cisco Integrated Management Controller (IMC).
- An authenticated, remote attacker may be able to inject arguments, leading to arbitrary command execution on the underlying OS.
- Impact can include privilege escalation to root, turning an admin-level web compromise into full device takeover.
- Attack surface: Cisco IMC web management interface.
- Required conditions: The attacker must be authenticated (reduces exposure but doesn’t eliminate risk—compromised credentials, SSO/session theft, or stolen admin accounts still apply).
- Worst-case outcome: Full command execution and root-level escalation on the managed platform.
- CVE-2026-20200
- CVE-2026-20288
- Credential compromise risk: If IMC credentials are reused, weak, or accessible via phishing/breach, attackers can pivot to IMC exploitation.
- East-west threat in data centers: Once an attacker reaches the management network, IMC becomes a high-value target for lateral movement and host control.
- No mitigation via workaround: Cisco states there are no workarounds, increasing urgency for patching.
- Enforce strong unique credentials and rotate any suspected accounts.
- Restrict access to the management interface using ACLs/VPN/bastion.
- Review IMC access logs for suspicious authenticated sessions and unusual command activity.
- Validate integrity of management-plane users and sessions shortly before/around potential compromise windows.
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Reference: Vendor Advisory